Pololu Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit

The Tamiya mini motor low-speed gearbox kit is a versatile solution for animating small robots or plastic models. It features a brushed DC motor and offers four gear ratio configurations: 71.4:1, 149.9:1, 314.9:1, and 661.2:1. This flexibility allows for optimal speed and torque adjustments tailored to your project's needs.

This gearbox kit is perfect for various applications, such as powering small vehicles or mechanisms that require precise control, like gates or drawbridges. The self-locking worm gear is a standout feature, preventing back-driving and offering stability on steep inclines or when lifting heavy objects.

With a compact size of approximately 20 x 24 x 30 mm, the gearbox is designed to fit seamlessly into tight spaces. It includes a 3 mm hexagonal output shaft, making it compatible with adapters for LEGO wheels and many Tamiya wheels. The transparent gear housing allows for a fascinating view of the internal mechanisms in action.

Assembly is straightforward with step-by-step illustrated instructions available in both Japanese and English. While a simple screwdriver is sufficient for assembly, having side cutters, tweezers, and a modeling knife can be beneficial. The motor's 030 form factor is smaller than those used in other Tamiya gearboxes, providing a compact yet powerful solution for your projects.